Nervous System
Body control/communication system, Receives, processes, responds to info , Works with other body systems to maintain homeostasis
Central
brain/spinal cord, processes info/sends out instructions
Peripheral
nerves branch from CNS, connect brain/spinal cord to body
The Brain
2 hemispheres: left & right, controls thinking, emotions, movement
Cerebellum
balance and coordination
Cerebrum
thinking, learning, memory
Brainstem
heart rate, breathing
Spinal Cord
Carries messages between the brain and body , Protected by vertebrae and controls reflex actions
Neurons (messengers)
Nerve cells that transmit signals, Signals travel through electrical impulses/chemical messengers
Dendrites
receive messages
Axon
sends message
Synapse
tiny gap where signal pass between neurons
How messages travel
Sensory neuron detects stimulus, Message sent to spinal cord/brain, Brain process info, Motor neurons sends response to muscles/glands
Somatic
voluntary mov.
Autonomic
involuntary
Sympathetic
fight or flight
CURES
speed up medical innovation
ACA
expand healthcare access, OBAMA
ADA
protect disability rights
CLIA
ensure lab testing accuracy
CSA
regulates drugs use
EMTALA
hospitals provide emergency care
GINA
protect genetic privacy
Good Samaritan Act
encourage emergency aid